hubbard



M. G. HUBBARD.

Carriage-Spring.

Nf); 12,890. Patented May 15, 1855.

Inventor:

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AM.PHOTOLITHO. CNN-Y1 (OS BURNE'S PROCESS) M. e. HUBBARD, on NEW YORK. NQY.

srnme ron CARRIAGES.

Specification of Letters Patent No. 12,890, dated May 15, 1855.

Be itknown thatl M. G. HUBBARD, of

U the city, county, and State of New York,

haveinvented certain new and useful Improvements in Carriage-Springs; and I do hereby declare the following to be a full,

clear, andexact description thereof, reference being ing, in which had to theaccompanying draw- ;Figure 1., is a plan. Fig. 2, is a side elevation.

By long practical {experience I have i found thatin using four long elastic bars over a rocker under the bottom of a carriage as a spring for steadying the motion and j as a reach, while I obtain a delicate spring with great strength andsimp-licity of construction thereis adefect only discoverable on a practical application which injures its usefulness and impairs its value, and this is the noise whlch accompanies its action there is a constant rumbling sound very diflicult to account for and I have expended much time andmoney to overcome the only objection to one-of the best and simplest springs ever discovered; after many fruitless attemptsI have found a remedy for the defect and its application forms the basis of mypresent invention.

The construction is as follows: I attach ing, two other similar springs b are affixed by their rear ends to the hind axle. The forward ends of springs 19 and rear ends of springs a are bolted to the corners of the body as clearly shown in the drawings.

ment is to dispense with the rocker or center support on the bottom of the carriage body which has heretofore'been required as a fulcrum and joining them by a bolt cl where the forward and back springs cross each other, to strengthen and sustain these parts I form a clip (see Fig. 3,) which having flanches turned each way embraces both springs as-clearly represented. This gives the elasticity required and prevents the great strain upon the carriage body, or rocker at the center when used as a fulcrum at that point and removes the objectionable noise as well preventing the strain on the parts, and consequent wear.

Having thus fully discovered my improved carriage springs what I claim therein as new and for which I desire to secure Letters Patent is- Joining the fulcrum of the springs as above described by connecting them by a clip and bolt at their crossing point as herein specified.

M. G. HUBBARD. Witnesses:

SYLVESTER LAY, JACOB HATZEL, Jr.

'These parts are not new but my improve- 

